This Holiday wreath project is sure to impress your friends and family, not to mention the UPS delivery guy, as they approach your front door! Here’s how to do it:

The project uses an Arduino microcontroller with the Adafruit MP3 shield and a Parallax PIR motion sensor to detect if someone is approaching the doorway. It then plays a custom greeting pre-recorded and pitched to sound like a jolly elf, followed by a random Christmas song. The song(s) will keep playing as long as the PIR sensor picks up motion within 15 seconds.